Sheet metal part welding positioning tool

Abstract

The utility model provides a kind of sheet metal part welding positioning tool, including pedestal, pedestal is provided: profiling seat, to place sheet metal part to be processed;Two clamps, mirror image is arranged in the left and right sides of profiling seat, clamp is connected with No. 1 drive group, and clamp is driven by No. 1 drive group to approach or away from profiling seat horizontally;Stop body, it is arranged in the back side of profiling seat, stop body is connected with No. 2 drive group, and stop body is driven by No. 2 drive group to move vertically up and down;Press body, it is arranged in the front side of profiling seat, press body is connected with No. 3 drive group, and press body is driven by No. 3 drive group to be inclined upward away from or inclined downward to press sheet metal part to be processed relative to profiling seat.The utility model constructs horizontal clamping, back side blocking, front tilting and compact three-way locking system, solves the uneven surface problem caused by bending mark of sheet metal part, and ensures zero displacement when welding.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically, it demonstrates a welding positioning fixture for sheet metal parts. Background Technology

[0002] Sheet metal parts are made from thin metal sheets through a combination of cold working processes, including shearing, punching / cutting / combined cutting, bending, welding, riveting, splicing, and forming. Their significant characteristics are that the thickness of the same part is consistent, and sheet metal parts made by bending processes have several bending marks and several non-parallel surfaces. Such sheet metal parts are difficult to place stably on a horizontal workbench for welding.

[0003] During the welding process of sheet metal parts, it is necessary to stabilize the sheet metal parts to facilitate the welding work. In the existing sheet metal parts welding process, the positioning mechanism is first used to position them to prevent displacement during the welding process. In common welding, the fixation of the workpiece is relatively simple, only designed with vertical downward pressure on the sheet metal parts. This is prone to displacement during welding, which leads to unqualified sheet metal parts welding and thus waste of resources. Utility Model Content

[0004] The purpose of this utility model is to provide a welding positioning fixture for sheet metal parts, which provides multi-directional positioning and good fixing effect.

[0005] The technical solution is as follows:

[0006] A sheet metal welding positioning fixture includes a base, on which:

[0007] A contour-following placement stand is used to place sheet metal parts to be processed.

[0008] Two clamps are arranged in a mirror image on the left and right sides of the contour placement base. The clamps are connected to the first drive group, which drives the clamps to move horizontally closer to or away from the contour placement base.

[0009] The baffle is located on the rear side of the contour placement base. The baffle is connected to the second drive group and is driven by the second drive group to move vertically up and down.

[0010] The pressure body is located on the front side of the contour placement seat. The pressure body is connected to the No. 3 drive group. The No. 3 drive group drives the pressure body to tilt upward or downward relative to the contour placement seat to press the sheet metal part to be processed.

[0011] In addition, the ultrasonic piercing welding device according to the above embodiments of this utility model may also have the following additional technical features:

[0012] According to one embodiment of the present invention, the third drive group includes:

[0013] A bracket, which is connected to the base;

[0014] The third drive cylinder component has its end hinged to the bracket.

[0015] A base frame is mounted on a support. A swing arm is hinged to one corner of the base frame, and the other end of the swing arm is connected to the pressure body. The pressure body and the swing arm are perpendicular to each other.

[0016] The connecting rod is hinged at both ends to the middle of the swing arm and the drive end of the third drive cylinder component, respectively.

[0017] The auxiliary rod is hinged at both ends to the middle of the base frame and the drive end of the third drive cylinder component, and the hinge point of the auxiliary rod coincides with that of the connecting rod.

[0018] The auxiliary rod and the connecting rod are coaxially hinged, forcing the pressure body to move along a set tilt angle to ensure that the clamping force is constant when pressing down.

[0019] The base frame has a blocking part on its outer side wall to prevent the auxiliary rod from rotating downwards. This blocking part acts as a physical hard limit to prevent the auxiliary rod from rotating excessively downwards due to overload or misoperation, thus avoiding damage to the mechanism.

[0020] The swing arm has a slot at its end for the pressure body to be inserted into. The outer wall of the middle part of the pressure body has external threads, and a pair of fastening nuts are screwed onto the pressure body to fix the pressure body and the swing arm. The pressure body can be quickly disassembled and replaced.

[0021] In one embodiment, a buffer pad is provided at the end of the press body to prevent scratches or deformation of the sheet metal surface caused by rigid contact between the press body and the sheet metal.

[0022] According to one embodiment of this utility model, the front end of the clamp is provided with a pair of mirror-shaped extensions, with a gap between the two extensions. Two-point contact reduces local pressure and prevents the thin sheet metal parts from deforming under pressure.

[0023] According to one embodiment of this utility model, the top surface of the contour placement seat is provided with several protruding positioning pins. This enables rapid centering during rough placement of the workpiece.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: In the horizontal direction, the left and right clamping bodies move in a mirror symmetrical manner, while applying horizontal clamping force from both sides of the sheet metal part to offset the risk of lateral displacement during welding; in the vertical direction, the stop body rises vertically from the rear to limit the sheet metal part from sliding backward; in the tilting direction, the front pressure body tilts downward, providing both vertical pressure and generating a horizontal component force in the direction of the stop body, thus forming a three-way locking system of horizontal clamping, rear stop, and forward tilting, which solves the problem of uneven surface caused by bending marks on the sheet metal part and ensures zero displacement during welding. Attached Figure Description

[0025] Figure 1 This is a top view schematic diagram of a sheet metal welding positioning fixture according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the No. 3 drive group in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the pressing body part in an embodiment of the present invention;

[0028] The relevant markings in the attached diagram are: 1-base, 2-contour placement seat, 3-clamp body, 4-drive group 1, 5-stop body, 6-drive group 2, 7-pressure body, 8-drive group 3; 21-positioning pin, 31-extension body, 71-fastening nut, 72-buffer pad body, 81-bracket, 82-drive cylinder 3, 83-base frame, 84-swing arm, 85-connecting rod, 86-auxiliary rod, 87-blocking part, 88-slot. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This utility model embodiment proposes a sheet metal welding positioning fixture, which mainly includes a horizontally arranged base 1. A contour placement seat 2, a clamp 3, a stop 5, and a pressure body 7 are arranged on the base 1. The clamp 3, the stop 5, and the pressure body 7 are distributed around the contour placement seat 2.

[0031] See Figure 1 As shown, the contour placement seat 2 is positioned in the center of the base 1 and is used to place the sheet metal parts to be processed. To better place the sheet metal parts to be processed, several protruding positioning pins 21 can be arrayed on the top surface of the contour placement seat 2 to correspond to the pre-drilled holes on the sheet metal parts to be processed. When the positioning pins are inserted into the pre-drilled holes of the sheet metal parts to be processed, the rapid centering of the sheet metal parts to be processed is achieved during rough placement, which shortens the subsequent clamping and adjustment time and improves the positioning accuracy and positioning efficiency.

[0032] See Figure 1As shown, two clamping bodies 3 are arranged in a mirror image on the left and right sides of the contour placement seat 2. The clamping bodies 3 are connected to the first drive group 4. The first drive group 4 drives the clamping bodies 3 to move horizontally closer to or away from the contour placement seat 2, thereby realizing the lateral clamping control force of the sheet metal parts to be processed. The first drive group is a cylinder. Preferably, a pair of mirror-image extensions 31 can be provided at the front end of the clamping body 3. There is a gap between the two extensions 31. The ends of the extensions 31 are flat contact surfaces. The two-point contact reduces the local pressure and prevents the thin sheet metal parts from being deformed by pressure.

[0033] See Figure 1 As shown, the baffle 5 is arranged on the rear side of the contour placement seat 2. The baffle 5 is connected to the second drive group 6. The second drive group 6 drives the baffle 5 to move vertically up and down. The second drive group is a cylinder component. In this way, the baffle can achieve the limiting and blocking effect on the rear side of the sheet metal part to be processed. That is to say, during the positioning process, the rear side of the sheet metal part to be processed can come into contact with the baffle.

[0034] See Figure 1 As shown, the pressure body 7 is arranged on the front side of the contour placement seat 2. The pressure body 7 is connected to the third drive group 8. The third drive group 8 drives the pressure body 7 to tilt upwards and away from the contour placement seat 2 or tilt downwards to press the sheet metal part to be processed. In this way, a clamping force of tilting downwards can be achieved on the sheet metal part to be processed. This clamping force will generate a certain component force to push the sheet metal part to be processed towards the stop. An elastic buffer pad 72 can be set at the end of the pressure body 7 to avoid the rigid contact of the pressure body causing scratches or deformation on the surface of the sheet metal part.

[0035] Horizontal direction: The left and right clamps 3 move in a mirror-symmetric manner, while applying horizontal clamping force from both sides of the sheet metal part to offset the risk of lateral displacement during welding.

[0036] Vertical direction: The stop 5 rises vertically from the rear to limit the sheet metal parts from sliding backward.

[0037] Inclined direction: The front pressure body 7 tilts downward, providing both vertical pressure and generating a horizontal component force in the direction of the stop.

[0038] This forms a three-way locking system with horizontal clamping, rear side blocking, and forward tilting pressing, ensuring zero displacement during welding.

[0039] See Figure 2As shown, the third drive group 8 is a linkage structure drive design. The components include a bracket 81, a third drive cylinder 82, a base frame 83, a swing arm 84, a connecting rod 85, and an auxiliary rod 86. The design is as follows: the bracket 81 is connected to the base 1; the end of the third drive cylinder 82 is hinged to the bracket 81, allowing the third drive cylinder 82 to rotate relative to the bracket 81; the base frame 83 is mounted on the bracket 81 and located on one side of the third drive cylinder 82; a hinge is found at one of the apex corners of the base frame 83. A swing arm 84 is connected so that the swing arm 84 can rotate relative to the base frame 83. The other end of the swing arm 84 is connected to the pressure body 7, and the pressure body 7 is perpendicular to the swing arm 84. The two ends of the connecting rod 85 are respectively hinged to the middle of the swing arm 84 and the driving end of the third driving cylinder component 82. The two ends of the auxiliary rod 86 are respectively hinged to the middle of the base frame 83 and the driving end of the third driving cylinder component 82, and the hinge points of the auxiliary rod 86, the connecting rod 85 and the third driving cylinder component 82 coincide.

[0040] The drive end of the third drive cylinder 82 extends outward, pushing the hinge point B forward, causing the auxiliary rod 86 to rotate outward, while simultaneously forcing the connecting rod 85 to push the swing arm 84 outward, causing the swing arm 84 to rotate outward. The rotation of the swing arm 84 drives the pressure body 7 to perform a downward pressing action on the upper side of the sheet metal part to be processed along an arc trajectory, ensuring that the clamping force is constant during pressing.

[0041] See Figure 2 As shown, a blocking part 87 is provided on the outer side wall of the base frame 83 to prevent the auxiliary rod 86 from rotating downward. The blocking part acts as a physical hard limit to prevent the auxiliary rod from rotating excessively downward due to overload or misoperation, thus avoiding damage to the mechanism.

[0042] See Figure 3 As shown, the end of the swing arm 84 is provided with a slot 88 for the pressure body 7 to be inserted. The outer wall of the middle part of the pressure body 7 is provided with an external thread. A pair of fastening nuts 71 are screwed on the pressure body 7. The two fastening nuts 71 realize the fixed connection between the pressure body 7 and the swing arm 84, so that the pressure body can be quickly disassembled and replaced, and the disassembly and assembly are convenient.

[0043] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A sheet metal welding positioning fixture, comprising a base (1), characterized in that, The base (1) is provided with: The contour placement stand (2) is used to place the sheet metal parts to be processed; Two clamps (3) are arranged in a mirror image on the left and right sides of the contouring placement seat (2). The clamps (3) are connected to the first drive group (4). The first drive group (4) drives the clamps (3) to move horizontally closer to or away from the contouring placement seat (2). The baffle (5) is located on the rear side of the contour placement seat (2). The baffle (5) is connected to the second drive group (6), and the second drive group (6) drives the baffle (5) to move vertically up and down. The pressing body (7) is placed on the front side of the contour placement seat (2). The pressing body (7) is connected to the third drive group (8). The third drive group (8) drives the pressing body (7) to tilt upwards and away from the contour placement seat (2) or tilt downwards to press the sheet metal part to be processed.

2. The sheet metal welding positioning fixture according to claim 1, characterized in that, The third drive group (8) includes: A bracket (81) is connected to the base (1); The third drive cylinder component (82) has its end hinged to the bracket (81). A base frame (83) is mounted on a support (81). A swing arm (84) is hinged to one corner of the base frame (83). The other end of the swing arm (84) is connected to the pressure body (7). The pressure body (7) and the swing arm (84) are perpendicular to each other. The connecting rod (85) is hinged at both ends to the middle of the swing arm (84) and the drive end of the third drive cylinder component (82); The auxiliary rod (86) is hinged at both ends to the middle of the base frame (83) and the drive end of the third drive cylinder component (82), and the hinge point of the auxiliary rod (86) coincides with that of the connecting rod (85).

3. The sheet metal welding positioning fixture according to claim 2, characterized in that, A blocking part (87) is provided on the outer side wall of the base frame (83) to prevent the auxiliary rod (86) from rotating downward.

4. The sheet metal welding positioning fixture according to claim 2, characterized in that, The end of the swing arm (84) is provided with a slot (88) for the pressure body (7) to be inserted. The outer wall of the middle part of the pressure body (7) is provided with an external thread. A pair of fastening nuts (71) are screwed on the pressure body (7). The two fastening nuts (71) realize the fixed connection between the pressure body (7) and the swing arm (84).

5. A sheet metal welding positioning fixture according to claim 4, characterized in that, A buffer pad (72) is provided at the end of the pressure body (7).

6. The sheet metal welding positioning fixture according to claim 1, characterized in that, The front end of the clamp (3) is provided with a pair of mirror-shaped extensions (31), with a gap between the two extensions (31).

7. The sheet metal welding positioning fixture according to claim 1, characterized in that, The top surface of the contour placement base (2) is provided with several protruding positioning pins (21).

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